Welcome to the
"Technical Section"
of
Doktor Jons
Guide to Closed Circuit TV (CCTV)

Specialist Cameras
Infra Red Cameras
Miniature Dome Cameras

SPECIALIST CAMERAS

In practice, the range of Specialist Cameras available, is really only limited by the imagination of the equipment designers; with cameras for looking up pipework, for use in prison cells, in cricket stumps for television sport broadcasting, strapped to trains in the Arctic Circle, or toiling away in an African diamond mine.

If someone needs a picture, then someone else will have found a way to do it. Perhaps the most unusual applications of recent years centre around developments in medical applications (take the ‘pill’ camera for example .... I’d rather not), or thermal imaging, where heat frequencies rather than visible light are used to produce an image.

Perhaps the most recent innovation is not technically described as a camera, but rather a 'Scanner'. The use of 'Millimetric Wave' scanner units, can quite literally see through clothing to identify hidden weapons.
Over a period of time, Doktor Jon will increase the range and detail of information relating to specialist CCTV cameras in use around the world.

INFRA RED (IR) CAMERAS

Talking of thermal imaging, they are in fact simply very high frequency IR cameras. When anyone mentions Infra Red, most people would immediately tend to think of bright red lamps, and whiter than white grass.
Although IR is still very widely used for generally night surveillance work, the steady increase in general imager sensitivities means that more and more locations that would previously have needed to use monochromatic Infra Red cameras, will in future be able to exploit the latest generation of colour capable imagers, to best effect.

MINIATURE DOME CAMERAS

Although hugely popular with ‘Facilities Managers’ and Architects, small indoor dome cameras are increasingly being applied in practically every type of commercial premises.

Hardly surprisingly, these models are often nothing more than a pretty plastic hemispherical case, housing a bulk standard PCB camera. Whilst it may be pleasing to the eye of a less than knowledgable end user, as far as Doktor Jon is concerned, most of these units are generally only suitable for short range applications, like door entry or ‘visual verification’, and should not be the front line device for producing Evidential Quality Images.

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